Chewing gum is a soft, cohesive substance designed to be chewed without being swallowed. Humans have used chewing gum in some form for at least 100,000 years. Modern chewing gum today is made from butadiene-based synthetic rubber. Most chewing gums are considered polymers.
近义、反义、联想词
近义词
n.
gum, sweet, confection
英英词典
chewing gum n.
a gum prepared for chewing; sweetened and flavored
a preparation (usually made of sweetened chicle) for chewing